Standard for rock drills



Dec. 19, 1922.

B. B. BREWSTER. STANDARD FOR ROCK DRILLS.

FILEDOCT. 26. 1913.

'Inveniar:

Fig. 23. BurilRBrewaZvr by M Jzify rarer BURT B. BREWSTER, OF SALT LAKE CITY, UTAH, ASSIGNOR TO SULLIVAN MACHINERY COMPANY, A. CORPORATION OF'MIASSACHUSETTS.

STANDARD FOR ROCK DRILLS.

Application filed October 26, 1918. Serial No. 259,846.

To all whom it mag poncern I Be it known that I, BURT B. BREWSTER, a citizen of the United States, residing at Salt Lake City, in the county of Salt Lake and State of Utah, have invented certain new and useful Improvements in Standards for Rock Drills, of which the following is a full, clear, and exact specification.

This invention relates to standards, and more particularly to standards used in mines for supporting drilling apparatus adapted for drilling blasting holes or shot holes, the

object of the present invention being to provide an inexpensive, light, adjustable, folding support for retaining in a horizontal or other desirable position a hammer drill and steel for drilling shot holes. These and various other objects have bee accomplished in, the present invention, a practical embodiment of which is shown in the accompanying drawings, in which i Fig. 1 is a side elevation showing the standard supporting a hammer drill anda steel in operative position.

Fig. 2 is a plan view of the same. Referring to the drawing and to the em bodiment of my invention therein disclosed, I have shown for illustrative purposes a standard 1, composed of a crosshead 2, connected at its center through a T coupling 3 with a substantially horizontally disposed leg 4, the crosshead 2 being supported at the ends thereof by two angularly disposed bracing and supporting legs 5 which contact with the mine floor. These supporting legs 5 are made in two parts 6and7, the part 6 consisting of a solid rod of metal or other suitable material, hav ing on one end a suitable point 8 adapted to keep the end of the rod 6 from sliding along the mine floor, and the part7 consisting of a hollow tube connected atone end to the cross'head by means of a curved coupling member 9 and adapted to receive telescopically the rod 6, and to retain this rod in adjustable relation therewith by means of a set screw 10. The couplings 9 hold the legs 5 at such an angle to the crosshead that these legs brace the crosshead and leg 4 against rearward or sideward movement.

The substantially horizontally disposedleg 4 has apointed end 11 ,to retain'this end at a predetermined point on the face of the coal 12 or other material to be mined.

Two bent rods 13 and 14 depend from the adapted to receive the handle 18 of the heme mer and the bent rod 14 having a loop or hook 19 to receive and guide the steel. The rod or support 13 may be slid along the horizontally' disposed leg 4 to feed the drill steel into the coal but the rod or-support 14 is preferably rigidly attached to theleg 4 to assist in guiding the steel when starting the hole.

YVhen in use the operator adjusts the length of the bracing and supporting legs 5 so'that the leg 4 is held in a substantially horizontal position with the pointed end thereof in spaced relation above the place where the hole is to be drilled. To drill the hole, it is only necessary to guide the drill by movement of the handle 18' and to press the work. lVhen the operator desires to transport the drilling mechanism and standard to another position, he dismounts the hammer drill and steel and folds the standard by rotating the leg 4 until it is in the plane of the legs 5.

While I have shown. and described my standard as supporting a tool in a position for drilling a horizontal hole, it is to be understood thatthe standard may be ad justed to drill the hole at any angle to the face of the material to be mined, and while I have herein shown and described for the purpose of illustration one specific form of the invention, it is to be understood that the same has been chosen for illustrative purposes only and that extensive deviations may be madefrom the disclosed form thereof without departing from the spirit of the invention or the scope of the appendedclaims.

What I claim as new and desire to secure by Letters Patent is:

1. In combination with a hand portable rock drilling apparatus comprising a drill Cir prising a drill steel and a tool for can the same to drill a hole said tool haunt. a

7 c1 sockct loosely rece ng said steel, a mounting for said apparatus including a standard having legs, and means supported on one of said legs and adapted to engage said tool and steel and hold the samewith their axes in parallelism with said leg during drilling.

In combination, a drill steel, a selfcontained power operated hand tool adapted to cooperate therewith and having a chuck loosely. receiving said steel, and means for suspending said steel and tool during drilling comprising a standard having legs and means freely slidable along one of said and adapted to engage and support said tool during drilling, and means connected to said leg and supporting said drill steel as the latter enters the face.

4:. In combination, a drill steel, a self-com tained power operated drilling tool adapted to cooperate therewith and having chuck means loosely receiving the steel, and means for supporting said steel and tool during drilling comprising a standard having a leg adapted to be supported against the face to be drilled, means supported on said leg and slidable therealong and adapted to releasably engage and support said tool, and means connected to said leg and disposed adjacent said face for slidably supporting said drill steel. I

5. In combination, a standard having a leg thereon adapted to be disposed against the surface to be worked, and means depending from said leg for supporting the usual manual grasping handle of a hand drilling tool.

6. In combination, a standard having a leg thereon adapted to be disposed against the surface to be worked, and means depending from said leg for supporting the usual manual grasping handle of a hand drilling tool, and means carried on said leg for supporting a steel actuated by said tool.

7. In combination, a standard having a leg thereon adapted to be disposed against the surface to be worked, and means depending from said leg including a pair of hooked ends adapted to support the handle of the tool.

8. In combination, a standard having a leg thereon adapted to be disposed list the surface to be worked, depending hooked means slidable on said leg and adapted to support the handle of a tool, and depending means carried on the front end of said leg adapted slidably to receive a steel.

9. lncombination, a standard having a leg thereon adapted to be disposed against the surface to be worked, means slidable on said leg and having depending laterally spaced hook-shaped ends adapted to support the handle of a tool, and means carried on the front end of said leg having ,a depending portion adapted to support a tool steel.

10. In combination, a standard lniving a leg engageable with the face to be worked a portable drill having a manual grasping handle and a drill steel, means slidable on and depending from said leg adapted to receive the drill handle, and cooperating means depending from said leg adapted slidabh to receive the drill steel, said means constil the sole means for supporting S5 said dial and steel on said standard during drilling.

In testimony whereof I ailix my signature.

BURT B. BREWSTER. 

